Changes to AS3775.2 Chain Slings for Lifting Purposes Part 2 – Care and Use Including Angles – Basketing The included angle of single-leg basket slings cannot exceed 60°, previously WLL tables had included of angles of 90° and 120°. Similarly the included angle between multi-leg basket sling of multi-leg reeved sling assemblies cannot exceed 60°. Back-hooking chains When Back-hooking chains, the hooks are to be back-hooked onto the secondary ring to avoid crowding on the master ring. Page 1 of 6 30th January 2015 – INFORMATION ONLY – Refer to AS3775.2 for up to date information. Hammerlock Connectors Hammerlock connectors are to have only one load point per hammerlock INCORRECT Two load points on hammerlock CORRECT One load point per hammerlock Inline Shorteners Locking shorteners are to be used for chain sizes up to 16mm. For chain sizes above 16mm where in line shorteners are used and they are not locked to the lifting sling assembly, additional measures shall be taken based on a risk assessment to prevent in jury should the shortener become detached whilst suspended. Page 2 of 6 30th January 2015 – INFORMATION ONLY – Refer to AS3775.2 for up to date information. Double Leg Sling Restrictions For a double leg sling where the sling leg angles to the vertical are visibly different but within 15° of each other, the slings capacity will be reduced to 80%. Note that this applies to double leg slings. Angles within 15° of each other = reduce WLL by 20% Where the angle difference is greater than 15° the sling is considered not symmetrically loaded, and each leg and lifting point must be rated for the full load. There are other circumstances in which a multi-leg sling is considered to be not symmetrically loaded and this is described in an appendix at the back of the standard. Angles greater than 15° of each other = reduce to allow for full weight of the load on each leg. There will be circumstances where it will be acceptable to use two single legs of one chain diameter but a double leg sling of the same diameter will not suffice Chain to be rated to WLL of 1 leg due to side load point on ring Using 2 single leg chains will allow for individual rating of both chains due to single load point on ring. Page 3 of 6 30th January 2015 – INFORMATION ONLY – Refer to AS3775.2 for up to date information. Double Leg Chains on Rams Hooks Where two individual double leg slings are use on a rams horn hook they shall be classed as a single four leg sling. Page 4 of 6 30th January 2015 – INFORMATION ONLY – Refer to AS3775.2 for up to date information. 3Leg Slings and 4 Leg Slings For three-leg and four-leg slings the following must apply, otherwise each leg of the sling and each lifting point must be rated for the whole load. Page 5 of 6 30th January 2015 – INFORMATION ONLY – Refer to AS3775.2 for up to date information. Corner Load Deration A deration guide for corner loading has been included. Grade “T” Chain Rating Chart Page 6 of 6 30th January 2015 – INFORMATION ONLY – Refer to AS3775.2 for up to date information.
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